Datasheet

 2008-2011 Microchip Technology Inc. DS39927C-page 235
PIC24F16KA102 FAMILY
TABLE 29-24: A/D MODULE SPECIFICATIONS
A/D CHARACTERISTICS
Standard Operating Conditions: 1.8V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  T
A  +125°C for Extended
Param
No.
Symbol Characteristic Min. Typ Max. Units Conditions
Device Supply
AD01 AVDD Module VDD Supply Greater of
V
DD – 0.3
or 1.8
— Lesser of
VDD + 0.3
or 3.6
V
AD02 AV
SS Module VSS Supply VSS – 0.3 — VSS + 0.3 V
Reference Inputs
AD05 V
REFH Reference Voltage High AVSS + 1.7 — AVDD V
AD06 VREFL Reference Voltage Low AVSS —AVDD – 1.7 V
AD07 VREF Absolute Reference
Voltage
AVSS – 0.3 — AVDD + 0.3 V
AD08 IV
REF Reference Voltage Input
Current
——200AVREF+ = 3.3V; sampling
——1.0mAVREF+ = 3.3V; converting
AD09 ZV
REF Reference Input
Impedance
—10K—  (Note 3)
Analog Input
AD10 V
INH-VINL Full-Scale Input Span VREFL —VREFH V (Note 2)
AD11 VIN Absolute Input Voltage AVSS – 0.3 — AVDD + 0.3 V
AD12 VINL Absolute VINL Input
Voltage
AVSS – 0.3 AVDD/2 V
AD17 R
IN Recommended
Impedance of Analog
Voltage Source
— — 2.5K  10-bit
A/D Accuracy
AD20b NR Resolution — 10 — bits
AD21b INL Integral Nonlinearity — ±1 ±2 LSb V
INL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD22b DNL Differential Nonlinearity — ±1 -1
+1.5
LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD23b G
ERR Gain Error — ±1 ±3 LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD24b E
OFF Offset Error — ±1 ±2 LSb VINL = AVSS = VREFL = 0V,
AV
DD = VREFH = 3V
AD25b Monotonicity — — — — (Note 1)
Note 1: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
2: Measurements are taken with external VREF+ and VREF- used as the A/D voltage reference.
3: Impedance during sampling is at 3.3V, 25°C. This parameter is for design guidance only and is not tested.